Aseraio and Khuzaits going strong.
How it happen that Vladia under perform so much?
Also that Sturgia...
From my normal campaigns experience, it usually goes like this: Battania is the starting enemy of WE. The Empire factions are weak by design. Battania takes several settlements from WE. Sooner or later Battania aggroes Vlandia and takes some settlements (most often Sargot). I had it several times that Vlandia made peace with Battania (in one campaign some seconds before finally reconquering the sieged Sargot) without having taken settlements back, just to declare war on Sturgia immediately. From then on it goes down steadily.
If Vlandia and Battania get into war early, without the Battanians first having taken some WE settlements, it's more even. In my last campaign I had set Vlandia and Battania as starting enemies, and Vlandia dominated.